U+2AE5 • mathematics
Symbol called Double Vertical Bar Double Left Turnstile, showing two vertical bars followed by a double left turnstile. Used in logic or proof theory to denote a strong form of entailment or derivability with qualifiers indicated by the double bars and double turnstile. It is distinct from simpler turnstile symbols by this combination.
The Symbol For Double Vertical Bar Double Left Turnstile (⫥) is a unicode character in the Basic Multilingual Plane Plane. It is found in the Supplemental Mathematical Operators block and was approved as part of Unicode Version 3.2 in 2002
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